Preamplifier 720 User manual
Contents
1. IN 6 will be activated after you have left the program ming mode Page 720 2 soulutlion 2 2 9 5 2 10 Seite nature of sound ol Bandwidth IN 1 IN 6 Digital signal sources can emit remarkable levels of high frequency noise through the connecting cables This will lower the sonic performance of your overall system You may limit the bandwidth of each input IN 1 IN 6 individually depending on the quality of the source signal After selecting the function Bandwidth IN 1 the display shows the value domain red LEDs active and you can limit the bandwidth for input In 1 sc TE Values high no limitation SONCWIDTH IN SRO n i mid 200 kHz 3dB MIL low 20 kHz 3dB PROGE Default high Display for function Bandwidth IN 4 Value domain activated After you have left the Program Mode the display shows the bandwidth limitation as follows SHLD IH 4 DE ON Display for Bandwidth limitation of input IN 4 Gain IN 1 IN 6 Different signal sources have different output levels You can adjust the level for each input by 0 3 6 9 dB individually After selecting the function Gain IN 1 the display shows the value domain red LEDs active and you can adjust the level for input In 1 For the input IN 3 phono exists additionally the function Phono Gain which de fines the basic amplification in to levels 54 dB 60 dB SOTH IH 4 Values 0 3 6 9 6 Default O FROGE Display for func2. Seite AO In operating condition OFF only the digital power supply is active Power consumption of 6 Watts As soon as the preamplifier is switched on it changes to the operating condition P ON The audio power supply unit is Started and the audio channels are checked for potential er rors When constant operating conditions are reached and no errors are detected the preamplifier changes into operating condition ON In operating condition ON the preamplifier is ready for opera tion If the power supply to the audio channels is interrupted or an error in the power supply unit has occurred the preamplifier is shut down automatically The display shows POWER FAIL If the current at the Main Out exceeds 1 ampere the pream plifier is shut down automatically The display shows OVER CURRENT In the case other soulution components are controlled via the LINK connection the preamplifier shows in the display LINK ERROR if an error has occurred Abbreviation for symmetrical connectors amp 1 Ground 2 Phase 3 Phase D 1 Ground 2 Phase 3 Phase Abbreviation for asymmetrical connectors 15 Individual Settings Function Start In Start Record Record Loop Start Volume Dim Volume Max Volume Balance Name IN 1 Name IN 2 Name IN 3 Name IN 4 Name IN 5 Name IN 6 Bandwidth IN 1 Bandwidth IN 2 Bandwidth IN 3 Bandwidth IN 4 Bandwidth IN 5 Bandwidth IN 6 Gain IN 1 Gain IN 2 Gain IN 3 Gain IN
3. 4 Gain IN 5 Gain IN 6 Phono Gain Phono High Pass Brightness Remote Ctrl ID Setting IN 1 OFF OFF 40 10 80 0 OFF OFF OFF OFF OFF OFF HIGH HIGH HIGH HIGH HIGH HIGH Preamplifier User manual oe ee Default Value Page 720 41 spemot ag industriestrasse 70 ch 4657 dulliken WwWwy soulution audio com info soulution audio com soulutlon nature of sound part no 92101
4. PROTECT ON We suggest bringing your preamplifier 720 in operating condition OFF while you are not listening to music Your preamplifier may be switched on with the IR remote control Power consumption in operating condition OFF ca 6 W LINK System In the case you have connected other soulution components to the preamplifier with the Link System it remains in operating condition PROTECT ON until all connected components are switched on Display LINK Connect 4 4 2 Preamplifier 720 User manual _ ol If no errors have occurred while switching on the other components the preamplifier 720 changes into operating condition ON LINK Correct MUTE F ONE Display in operating condition OFF Display after switch on of LINK Display in operating condition ON components DC protection active When the preamplifier is switched off all connected LINK components are switched off simultaneously operating condition OFF MUTE UFE Display after switch off of LINK Display in operating condition OFF components If an error occurs within a LINK component while operating the display shows LINK ERROR LINK ERROR cia IH Display for an error within a LINK component Security advice Unplug your preamplifier from the mains before you manipulate with cables before you clean your preamplifier during thunder storms or before you leave for longer periods Before you switch off the mains bring your preamplifier in operating
5. and from the power amplifier to your loudspeakers whether you have selected the correct input the source device is muted and if the power amplifier is switched on If the power supply to the audio channels is interrupted or an error in the power supply unit has occurred the preampli fier is shut down automatically The display shows POWER FAIL If the current at the Main Out exceeds 1 ampere the pream plifier is shut down automatically The display shows OVER CURRENT Check the cabling to the power amplifier This error may also be provoked by defect or switched off power amplifier Actions after the appearance of an error If you con not identify the error please disconnect the mains supply before you dis connect the preamplifier has to be in operating condition OFF and contact your soulution dealer Page 720 35 soulutlion 9 1 9 2 9 3 Seite 36 natuce of sound Ot Care and maintenance Burn in The preamplifier will play on top level immediately after the first placing into opera tion However during the first 20 50 hours of operation you will notice a further im provement of its sonic qualities Longlife precautions We use only highest quality components for our soulution preamplifiers Compo nents prone to aging are kept under constant voltages in stand by OFF condition in order to further increase their lifetime In stand by OFF condition the preamplifier 720 dissipates ca 6 Watt
6. condition OFF Please follow the security advices on page 6 Mute L Mute is a security function which allows you disconnecting all inputs from the out puts In case of an urgency wrong cabling feedback loops etc Mute cuts off the symmetrical as well as the asymmetrical outputs and the record out Display MUTE Page 17 soulutlion 4 4 3 4 4 4 4 4 4 1 Seite nature of sound Ot For reducing the volume to a predefined level please use the function Volume Dim IN 4 MUTE GH Display in operating condition MUTE Prog M The Prog button switches the preamplifier between operating modus and program ming modus In the programming modus you may adjust the preamplifier to your individual requirements Volume N The Volume knob controls the functions Volume and Volume Dim Volume The preamplifier 720 disposes over a volume control range of 80 dB The volume is adjustable in 1 dB steps Display 1 lowest level attenuation by 79dB 80 maximal level no attenuation Turning the Volume knob clock wise increases the volume turning counter clock wise decreases the volume In order to omit too high volumes we suggest limiting the volume individually with the function Volume Max When you reach the maximal level the display shows for example M 60 The volume can not be further increased by turning the volume knob 18 4 4 4 2 4 4 5 4 4 5 1 Preamplifier User manual
7. noise and harmful voltage peaks while changing the volume the soulution 720 disposes over an additional volume control path only active while actually changing the volume This parallel volume control is realised with a Programmable Gain Amplifier PGA which is able to adjust the volume with out any noise As soon as the new volume level is set the signal path is switched to the high end resistor network Phono Stage moving coil The phono stage has a basic amplification of 54 dB or 60 dB at 1 kHz This can be defined with the function Phono Gain The phono amplifier works with an in ternal bandwidth of 1 MHz 3 dB This guarantees the most accurate reproduction of the RIAA equalisation curve External phono modules ensure optimal impedance matching of your cartridge and the phono amplifier The enclosed modules adjust the impedance to 1kQ and 1000 Modules with other impedances are available through your soulution dealer 3 4 3 9 Preamplifier User manual i er Output stage The output stage is optimised for velocity precision and impulse current rating Thanks to its low output impedance of 20 and Class A operation 40mA idle cur rent the output stage stable on every load also long cables are driven without prob lems The theoretical maximal current rating of 3 amperes is limited to 1 ampere This is realised with a protection circuit outside the signal path Due to the bandwidth of 1 MHz 3 dB in
8. sound Ot For security reasons the DC protection function is activated during the switch over to the new input If there is no DC offset the coupling capacitor is bypassed after ca 15 seconds Record Select By pushing the Input knob the preamplifier changes into Record Select Mode Now you may select the input to be looped through to the Record Out connectors The display shows the current Record In for example REC IN 2 Spin the Input knob un til the desired Record In appears in the display The new Record IN is only acti vated when you push again the Input knob Thus you confirm the new selection and the Record Select Mode is left In the case you do not want to loop through any sig nal to the Record Out connectors please choose REC OFF The activated Record Out disappears from the display after the Record Select Mode is left The display shows the current input connected to the Main Out connectors If a Record out Is activated the display shows sign R Display for operating condition Re Display after exiting the Record cord Select Mode Select Mode with active Record In The settings of the Record Select do not affect the signal present at the Main Out connectors Programming The Input knob is used in the Program Mode for selecting program functions and setting of values for the respective program functions Display IR receiver P The display shows all relevant information for operating your preamplifier I
9. General Nominal voltage Nominal rating Power consumption Power consumption Line inputs Amplification Frequency response Slew rate THD N Signal to Noise ratio Crosstalk Input impedance Phono Input Amplification Amplifier bandwidth Slew rate THD N Input Impedance Outputs Voltage Current Impedance LINK Out Dimensions Dimensions Weight OFF ON IN I IN 2 IN 4 IN 6 symmetrical IN 1 IN 2 asymmetrical IN 4 IN 6 symmetrical IN 1 IN 2 asymmetrical IN 4 IN 6 IN 3 internal no adaptation Main Out symmetrical Main Out asymmetrical Main Out symmetrical Main Out asymmetrical Record Out Data 230 V 50 60 Hz 250 W 6 W 60 W 9 5 18 5 dB 3 5 12 5 dB DC 1 MHz 400 ns lt 0 0006 140 dB 105 dB 2 KQ 47 KQ 54 60 dB DC 1 MHz 400 ns lt 0 0006 1 KQ max 16 Vrms 100Q max 8 Vrms 100Q max lA 20 20 100 Q 12 V 480x450x167 mm ca 30kg Technical specifications are subject to change without prior notification Preamplifier 720 User manual oe ae 13 Dimensions 450 mm 467 mm ingpu pai sa ps e e 83 mm soulution 397 mm 480 mm I E J fl f 83 mm 397 mm 480 mm Page 39 soulutlion nature of sound Ot 14 Definitions Operating conditions OFF Standby P ON PROTECT ON ON POWER FAIL OVER CURRENT LINK ERROR Labelling SYM XLR Female XLR Male ASYM
10. Preamplifier 720 User manual souLUtion natuce of sound Preamplifier User manual i er Dear client We are proud that you decided yourself for a soulution preamplifier You have ac quired an preamplifier with outstanding sonic performance which you will enjoy for many years We understand your eagerness to get started but even though please study this manual step by step before you integrate the preamplifier 720 in your High Fidelity system This manual contains also useful tips for the optimisation of your overall HiFi system If there are any questions regarding the start up or operation of your preamplifier please do not hesitate to contact your dealer Have fun Page 720 l soulutlion Seite 2 nature of sound Ot CE Declaration of Conformity Spemot AG declares that this product is in conformance with the following direc tives and standards Low Voltage Directive 73 23 EEC EN IEC 60065 2002 Electromagnetic Compatibility 89 336 EEC replaced by 92 31 EEC and 93 68 EEC EN 55013 EN 55020 EN 61000 3 2 3 FCC Notice Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are de signed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and If not installed and used in
11. Record Loop In order to avoid a feedback loop with a connected recording device you have to in struct the preamplifier with which input IN 1 IN 6 a feedback loop shall be im peded The preamplifier will now omit a feedback loop with this input After selecting the function Record Loop the display shows the value domain red LEDs active and you may define to which input you have connected your recording device RECORD _ OOP Values IN 1 IN 2 IN 4 IN 5 IN 6 OFF IH Default OFF PROGI Display for function Record Loop Value domain activated The new setting is active as soon as you approve the value by pressing the Input knob Example You have connected the output of your recording device with the in put IN 2 of the preamplifier 720 You have defined In 2 for the program function Record Loop Now it is Impossible to choose the input IN 2 as Record In The func tion Record Select is not affected by the settings of the function Record Loop Security advice If later on you connect your recording device to an other input of your preamplifier 720 you have to adjust the setting of the function Record Loop Never connect the output of your recording device to the phono input IN 3 The phono stage would be destroyed immediately Therefore the value IN 3 is not avail able for the function Record Loop 24 5 2 4 5 2 95 Preamplifier User manual i er Start Volume This function defines the volu
12. accordance with the instructions may cause harm ful interference to radio communications However there is no guarantee that inter ference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encour aged to try to correct the Interference by one or more of the following measures adjust or relocate the receiving antenna increase the separation between the equipment and the receiver connect the equipment into an outlet on a circuit different from that to which the receiver is connected consult the dealer or an experienced radio TV technician for help Disposal According to the Directive 2002 96 EG of the European Parliament used consumer electro technical appliances have to be disposed separately and have to be indicated with the following symbol x In the case of disposal of this component please do so in conformity with legal and environmental regulations Preamplifier User manual Table of contents N FR N FR e e e 0000 WW N DDA OOo WUN O wre i ND ND HP om A Uli ae 5 Important Security aOVICES 6 Technical FA Slip acini 8 E OU apse reese RR RR CR A A 8 W OWS holland 8 Phono Stage MOVING COll 8 JOUDUT T ein 9 OWS SUDI ore E ET 9 Gain ad USME N esnaera EES 10 POPROFEC e EEE a a E 10 BINOWCoR I Menaio 10 Start of operation
13. ad Default and you confirm with YES The follow ing values will be loaded ity NEC Start In INI Name IN 1 IN 6 OFF URES S Start Record OFF Bandwidth IN 1 IN6 HIGH YES Record Loop OFF Gain IN 1 IN 6 0 FRUE Start Volume 30 Phono Gain LOW Display for function Load Default Dim Volume 20 Phono High Pass ON Tae COMEN AE Wale Max Volume 80 Brightness 3 Balance O Remote Ctrl ID l Security advice Please note your personal settings in the table Individual Settings on page Fehler Textmarke nicht definiert Software Info This function shows you the version of software installed on your preamplifier Page 720 31 soulutlion 6 1 6 2 6 2 1 6 2 2 6 2 3 Seite 32 natuce of sound M Remote control 720 The remote control 720 is able to control all functions of the preamplifier 720 Start of operation and maintenance The remote control requires 2 AAA batteries enclosed in the scope of delivery We recommend using only top quality products Exchange of batteries open the battery tray on the rear side of the remote control insert the batteries into the tray as indicated Ensure correct polarity of the batteries close the tray with corresponding screw dispose the exhausted batteries Handling IR Transmitter 1 Ensure that the IR transmitter is not covered and that the IR receiver of the pream plifier is not hided by any objects The remote control works up u
14. and handling of the preamplifier 720 11 Scope of delivery and packiINg i 11 Optimal positioning of your preamplifier 11 Rear panel of the preamplifier 20 12 Front panel of the preamplifier 20 16 Programming of the preamplifier 720 22 TW RR O RO AAA 22 OST FC WON lla 23 Remote control 0a ida 32 Start of operation ANd maintenance i 32 Sco E PE E E E E SZ Protection functions of the preamplifier 720 34 Trouble SNOOTINE rr n a 35 Actions after the appearance of an Eerror i 35 Care and MalNiENANCE soriiir 36 Uil 36 Longlife precautions siria aa 36 IO en a 36 BS E OE ARTO 37 VA Oy A EE E E A E A E E E E oF SPECCHI ao aaa AA a 38 IMSS IO NS aea E E E A 39 Dari EVI NGS eenei AK E E AEA 40 CUI VGA SEEN S S ail 41 720 3 Quick start Unpacking Positioning Cabling Programming Switch on Preamplifier User manual i M Unpack the preamplifier 720 and store the packing for future transportations Security advice Your preamplifier has a top class surface Please take care while installing the soulution 720 Position the soulution 720 on a stable base Security advice Cooling air must be able to circu late and escape unrestricted Disconnect all electrical appliances of your HiFi system from the mains supply Connect your preamplifier 720 with your ampli
15. be crushed by objects Unplug your preamplifier soulution 720 from the mains connection in the following cases before you manipulate with cables before you clean your amplifier during thunder storms or before you leave for longer periods Cabling While manipulating with cables the preamplifier has to remain disconnected from the mains Before you disconnect the mains the preamplifier has to be in operating condition OFF Wrong cabling may cause damages to your preamplifier 720 your amplifier or to your loudspeakers Excessive volumes due to Inappropriate handling may cause hearing damages Transport Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving cart apparatus combination to avoid injury or tip over Preamplifier 720 User manual i er Packing Please keep the original packing for future transports The original packing is opti mal protection against potential damages Operation Never run your preamplifier with opened housing with closed cooling slots with high ambient temperatures gt 40 C close to heat sources like radiators heatings ovens or similar appliances dis sipating heat with extremely high humidity for example in humid cellars or rooms similar humidity close to water Sink bathtub or similar equipment Cleaning Use a soft and dry towel We suggest using a non abrasi
16. bsonic filter RIAA IEC can be activated In the case you do not use your phono stage we recommend to cut off the Input IN 3 with enclosed phono termination plug This prevents from accidentally connecting a line source apparatus security advice Never connect a line source to the input IN 3 The phono stage is not protected against over voltages for sonic reasons and would be destroyed Please follow the security advices on page 6 Asymmetrical inputs IN 4 IN 6 D Your preamplifier has three asymmetrical inputs IN 4 IN 6 Connect your signal sources with asymmetrical cables with the preamplifier 720 Security advice please follow the security advices on page 6 Page 720 13 soulutlion 4 3 5 4 3 6 Seite 14 nature of sound Ot Record Out E Connect the inputs of your recording device with Record Out terminals of the pre amplifier 720 asymmetrical cables The selected Record In signal is directed to the Record out terminals through a se parate signal path Volume Balance or Gain settings do not affect the signal at the Record out terminals For level adjustments please use the respective control functions of your recording device The signal present at the Record out terminals is buffered and has an output im pedance of 1000 Therefore cable losses are minimised and top quality music sig nal is available for recording Security advice If you connect a recording device you should de
17. fier and signal sources according to user manual Use the respective signal cables and the cable for the LIN K system Reconnect the preamplifier 720 and all other components of your HiFi system with mains supply Please use the enclosed high class mains cable for your preamplifier 720 Security advice While manipulating with cables the preamplifier 720 has to remain disconnected from the mains supply Default values for all functions are programmed No additional programming is required for the start up of your preamplifier Security advice We suggest programming of the functions Start Volume and Max Volume If you use re cording equipment the function Record Loop should be programmed Switch on your source devices and the preamplifier 720 Turn down the volume of the soulution 720 to a minimal level Switch on your amplifier Security advice Before you switch on the amplifier check whether the cabling is done correctly Page 720 5 soulutlion Seite nature of sound Ot 6 Important security advices User manual Read this user manual carefully before you start up your preamplifier 720 and fol low all installation and security advices Please keep this user manual In the case this manual gets lost you have the possi bility to download it from the soulution webpage http www soulution audio com downloads Mains supply Exclusively use 3 phase power cords with ground conductor The may not
18. fine the function Record Loop Thus you omit eventually harmful feedback loops Please follow the security advices on page 6 Main Out F The preamplifier 720 provides symmetrical as well as asymmetrical output termi nals Main Out Connect your amplifier with the soulution 720 with your preferred cables Due to the exceptional load stability there are no restriction regarding the selection of your connecting cables We recommend using symmetrical cables due to their better For short cable lengths also asymmetrical cables represent a high quality connection top quality cable and optimal layout prerequisite The level difference between the symmetrical and asymmetrical output accounts for 6 dB The symmetrical output Main Out additionally offers the ground lift function The ground lift switch cuts off the ground connection between the audio circuit and the symmetrical output terminal This offers the possibility to suppress a potential humm loop between your preamplifier and power amplifier Ground Lift 1 ground connected Ground Lift O ground disconnected The housing of your preamplifier remains grounded independent of the ground lift switch security advice Please follow the security advices on page 6 4 3 4 3 8 4 3 9 Preamplifier User manual i er LINK G The preamplifier controls the start up sequence of connected soulution components through the LINK connection Master Slave principle the p
19. hing to the value domain of the function Balance the preamplifier changes the current volume of left or right channel according to the setting of the Balance setting Now you are able to judge whether the Balance is appropriate 26 5 2 8 Preamplifier User manual E ee The Balance setting reduces the maximal possible volume control range of 80dB by the Balance setting Balance lt 7 dB gt volume control range 73 dB After switching back to the operating mode the display shows balance settings as follows SHLD IH 4 SHLD IN 4 DIE JH a JH Display for Balance setting to the Display for Balance setting tot the left right Name IN 1 IN 6 You may rename the inputs IN 1 IN 6 by selecting on out of the predefined source name list After selecting the function Name IN 2 the display shows the value do main red LEDs active and you can define the desired name for input In 2 Wome 4 Values AUX AUX1 AUX2 CD CD1 CD2 NESS DAC DAT DCC DVD DVD1 DVD2 SACD DVDA HD HiMD LD MD MP3 PC FRUGE PHON SACD TAPE TUNE TV DVB Display for function Name IN 4 DAB OFF Value domain activated Default OFF If you want to switch off the name please select OFF The respective input will then be shown as IN 1 IN 6 Example After you selected SACD for the input IN 4 the display shows the input as follows SHLD IH 4 ES GH Display for Name IN 4 SACD The new input names IN 1
20. i er Volume Dim By pushing the volume knob the volume is reduced to the predefined level Volume Dim Display for example D 10 By pushing the volume knob again the volume is increased to the original level As long as the Volume Dim function is active the volume can not be altered by the volume knob The volume can only be changed after the Volume Dim function has been deactivated Display with active Volume Dim function Input 0 The Input knob controls the functions Input Select Record Select and is used for the Programming Input Select By turning the Input knob you define which input of the preamplifier shall be con nected The display shows the input you want to select for example SACD IN 4 The current input remains active until the new input has been selected and the in put knob was not turned for ca 3 sec All other inputs remain completely disconnected from the preamplifier 720 Signal and ground are dis connected by top class relays Hum noise originating from even tual equalising currents between connected audio components is thus effectively eliminated Additionally cross talk from inactive inputs to the active input is sup pressed SHLD IH 4 SHLD IH 4 pa gt SI eel ae ONY ia Display while selecting a new input Display after the new input is switched on DC protection deacti vated Page 720 19 soulutlion 4 4 5 2 4 4 5 3 4 4 6 Seite nature of
21. me when starting up the preamplifier 20 After se lecting the function Start Volume the display shows the value domain red LEDs ac tive and you may define the desired volume level START UoLuUMe Value 1 40 ao Default 30 PROGE Display for function Start Volume Value domain activated While switching to the value domain of the function Start Volume the preamplifier changes the current volume to the value defined in Start Volume Now you are able to judge whether the Start Volume level is appropriate As soon as the value domain is left the preamplifier switches back to the former volume level Dim Volume This function defines the Dim Volume After selecting the function Dim Volume the display shows the value domain red LEDs active and you may define the desired volume level Values 0 40 DIM YOLUME Lis Default 20 PROGI Display for function Dim Volume Value domain activated While switching to the value domain of the function Dim Volume the preamplifier changes the current volume to the value defined in Dim Volume Now you are able to Judge whether the Dim Volume level is appropriate As soon as the value domain is left the preamplifier switches back to the former volume level Security advice Set the Dim Volume to a moderate level If you ex change a component of your system please check whether the setting still is appro priate Page 720 25 soulutlion 5 2 6 5 2 7 Seite natuce of s
22. minimal volume differences while switching between inputs the preamplifier allows adjusting the gain per input Individually This is implemented with an additional amplification Stages adjustable for 3 6 9 dB and a level accuracy of 0 01 dB This additional amplification is only active when really needed DC PROTECT The input signal is permanently monitored for DC offsets As soon as a DC offset of gt 15 mV Is detected a high quality capacitor is switched into the signal path for op timal protection of the preamplifier soulution 720 The display shows the symbol for the capacitor If the DC offset has disappeared for at least 15 seconds the ca pacitor is switched out of the signal path This ensures optimal protection while si multaneously providing a capacitor free signal path offset free signal prerequisite Bandwidth limitation Another source for potential adulterations of the music Is high frequency noise High frequency noise may be coupled through connecting cables or is present in source equipment as artefacts of digital to analogue conversion The bandwidth can be limited individually per input therefore providing optimal sound quality also for HF noise affected input signals 4 1 4 2 Preamplifier User manual i er Start of operation and handling of the preamplifier 720 Please take care while installing the preamplifier 720 Follow all security advices Scope of delivery and packing Please check
23. n operat ing mode the volume the operating condition and the activated input is shown 20 Preamplifier 720 User manual i er Except for the program mode the display shows always the current volume level Security advice The IR recelver for the remote control is located in the lower left corner behind the display glass For best reception do not place any ob jects in front of the display Never place your preamplifier on the front panel The display glass could get scratched or even burst Page 21 soulutlion 5 1 Seite 22 natuce of sound Ot Programming of the preamplifier 720 Overview The available Program Functions allow adjusting the preamplifier to your individual High Fidelity setup The preamplifier is already program with default settings The programming of your preamplifier is not mandatory We recommend to adjust the functions Start Volume to your setup and to limit the volume with the function Max Volume If you connect a recording device recom mend implicitly to activate the function Record Loop Element Function Prog button The Prog button changes the preamplifier from operating mode to Program mode and vice versa The preamplifier remains in the respective mode until the Prog button is pressed again Input knob Spinning of the Input knob allows selecting the desired Pro gram function Pressing the Input knob approves the selected function Now the value domain of the selec
24. ngs of the function Phono High Pass are immediately execute for a direct feedback Phono High Pass OFF should be used only for top quality LP s and decoupled turntables For security reasons we recommend to activate the subsonic filter Brightness The intensity of the display can be adjusted in three steps ERIGHTHESS Values aaa 2 medium 3 high FEOGE Display for function Brightness Default 3 Value domain activated The intensity is adjusted immediately Remote Ctrl ID If you use two different preamplifiers or the ID of the preamplifier is already used by another device of your HiFi setup you can change the identification of your pream plifier 720 Factory default is 1 For changing the ID of the remote control please refer to page 33 After selecting the function Remote Ctrl ID the display shows the value domain red LEDs active and you can select the desired ID Values 1 2 REMOTE CTRL ID 1 Default l PROGI Display for function Remote Ctrl ID Value domain activated The new Remote Control ID will be activated after the Program Mode Is left 30 5 2 15 5 2 16 Preamplifier User manual i er If you change the Remote Ctrl ID the preamplifier can only be controlled by the re mote control after you have switched the ID of the remote control Load Default In the case you want to overwrite all your individual settings by the factory default values you select the function Lo
25. ntil a distance of 5m and a maximal angel of incident of 45 Volume Buttons 2 3 The Volume Buttons control the volume in 1 dB steps Volume Dim 4 Pressing the Volume Dim button de activates the Volume Dim function 6 2 4 6 2 5 6 2 6 6 2 6 2 8 Preamplifier User manual i er Input Buttons Enter 5 6 7 In operating mode the Input buttons switch between the different inputs With the Enter button you change to the Record select mode In this mode the Input but tons allow to select the Record IN In Program Mode Prog button the Input buttons allow to select the desired func tion and the Enter button confirms the selection If the value domain of a function is activated the Input buttons allow setting the new value and Enter button con firms the new setting Prog Taste 8 The Prog button switches the preamplifier between Operating Mode and Program Mode Mute 9 The security function mute disconnects the Main Out and the Record Out connec tors from the preamplifier Power 10 The Power button defines the operating condition ON or OFF Remote Ctrl ID You can change the transmitter ID of the remote control as follows ID 1 Input button 6 Input button 5 and Power button 10 ID 2 Input button 6 Input button 5 and Mute button 9 Press the respective buttons for approximately 5 seconds The remote control con firms the new ID via red LED on its fr
26. ont Page 720 33 soulutlion Seite 34 nature of sound Ot Protection functions of the preamplifier 720 Comprehensive protection functions ensure a secure operation and long durability The preamplifier 720 disposes over the following functions Overcurrent For currents gt 1 Ampere at the Main Out the preamplifier shuts down automati cally DC PROTECT Your preamplifier is protected against DC offset at the inputs IN 1 IN 6 The input signal is permanently monitored for DC components As soon as a DC offset is de tected a coupling capacitor is switched into the signal path This capacitor is by passed If the DC offset has ceased for at least 15 seconds The display shows the symbol for the capacitor While switching between inputs the capacitor is activated automatically for security reasons This is not a malfunction of your source device Fuse The mains connection has a fuse which protects your preamplifier against the high power consumption Please replace with the same fuse type 2A T 250V fusible cut out 5x20mm The fuse is located within the mains switch on the rear side of the preamplifier 8 1 Trouble shooting Error No Display No music POWER FAIL OVERCURRENT Preamplifier User manual i er Action Check the cabling to the mains supply Eventually replace the fuse of your preamplifier 720 Check the cabling to your power amplifier signal sources
27. ound Ot Max Volume You may limit the maximal volume level in order to avoid dangerous volume levels through malicious handling Especially for high efficiency loudspeakers this security function should be used After selecting the function Max Volume the display shows the value domain red LEDs active and you may define the desired volume level Values 40 80 MAsTWOLUME Gb s Default 80 PROG Display for function Max Volume Value domain activated While switching to the value domain of the function Max Volume the preamplifier will not adjust the volume level for security reasons In the case you limit the volume the control range is reduced accordingly Max Volume 60 the volume control range is limited to 60 dB When you reach the maximal volume level the display shows M for example M 60 Security advice The settings of the functions Gain IN 1 IN 6 and Phono Gain may provoke an additional 9 dB level difference between the different inputs Define the Max Volume for the input with the highest level Balance The function Balance defines the level difference between left and right channel You can adjust the Balance in 1 dB steps After selecting the function Balance the display shows the value domain red LEDs active and you may define the desired volume level Values lt 9 0 9 gt BHLHNHLCE 4 Default 0 PROG Display for function Balance Value domain activated While switc
28. ower supplies of the preamplifier get started The display Shows WAIT As soon as constant conditions for the power supplies are reached the preamplifier changes to operating condition OFF red LEDs in display WALT Display after switch in of the mains Display in operating condition OFF security advice Only switch off the mains connection if your preampli fier is In operating condition OFF Symmetrical inputs IN 1 IN 2 B Your preamplifier has two symmetrical inputs IN 1 IN 2 Connect your high quality source equipment with symmetrical cables to the preamplifier 720 Security advice please follow the security advices on page 6 4 3 3 4 3 4 Preamplifier User manual i er Phono stage IN 3 C The asymmetrical input IN 3 is reserved exclusively for phono MC Connect your analogue turntable with asymmetrical connectors to the preamplifier 720 Please connect only moving coil MC systems External phono modules ensure optimal impedance matching of your cartridge and the phono amplifier The enclosed modules adjust the impedance to 1kQ and 1000 Modules with other impedances are available through your soulution dealer The phono stage has a basic amplification of 54 dB or 60 dB at 1 kHz This can be defined with the function Phono Gain The phono amplifier works with an in ternal bandwidth of 1 MHz 3 dB This guarantees the most accurate reproduction of the RIAA equalisation curve If required the su
29. reamplifier 720 is al ways the Master Connect the Master Out 1 or Master Out 2 terminal of your pre amplifier 720 with the other soulution components Each soulution component has Next Slave output to connect further soulution appliances DC Out H The ultra stable power supply of the preamplifier 720 is available for external soulu tion components e g external phono preamplifier external DAC etc through the DC OUT connector Security advice Never remove the security cover while your preampli fier is In operation Always switch off your preamplifier before you connect an exter nal device Type label I Please note the serial number of your preamplifier on page 7 of this user manual This allows you to have the preamplifier specific data at hand without removing your preamplifier from the HIFI rack Page 720 15 soulutlion 4 4 4 4 1 Seite 16 nature of sound ol Front panel of the preamplifier 720 soulution i Ra TM soulution 720 s front panel Power K With the bottom power you define the operating condition ON or OFF red LEDs In operating condition OFF the audio circuits are completely disconnected from the output terminal Main Out The Main Out terminals are only activated if the pre amplifier is ready for operation and if no errors are present MUTE P ONE Display in operating condition OFF Display in operating condition Display in operating condition ON
30. s Security advice Unplug your preamplifier if you leave for longer periods Cleaning Please use a soft towel for the cleaning of your preamplifier We recommend the use of a nonabrasive micro fibre towel Please do not employ any solvents Security advice Liquidity is not allowed to enter the preamplifier 720 The electronic may be damaged seriously 10 11 Preamplifier User manual i er Service If your soulution preamplifier needs service please contact your soulution dealer For further information see www soulution audio com Warranty All soulution products are guaranteed against defects in material and workmanship for five years from date of purchase The guarantee is void if the soulution 720 has been subject to misuse or negligence or has been modified repaired or opened by a non authorised person without writ ten authorisation of Spemot AG For the return transport to our premises please use exclusively the original packag ing Transport damages are not subject to this guarantee repairs will be charged We recommend effecting transport insurance If you not posses the original packaging no more please contact your soulution dealer Basic repairs may be completed by your soulution dealer Please clarify whether he is able to do the work before you send the preamplifier 720 back to us Page 720 37 soulutlion 12 Seite nature of sound Ot Specifications Specification
31. ted function is ac tive red LEDs in display Spinning of the Input knob allows adjusting the desired value Pressing the Input knob approves the respective value 5 2 Dell 5 2 2 Preamplifier User manual i er Program functions Start In This function defines which input shall be active after start up if your preamplifier After selecting the function Start In the display shows the value domain red LEDs active and you may define the desired input Values IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 SIHRT IM IH 1 Default IN 1 PROGE Display for function Start In value domain activated The selected input IN 1 IN 6 will be activated when starting up OFF gt ON the preamplifier 720 the next time Start Record This function defines which input shall be looped through to the record out connec tors when starting up the preamplifier 720 After selecting the function Start Record the display shows the value domain red LEDs active and you may define the desired input STORTLRECORD Values IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 OFF IN 4 Default OFF PROGI Display for function Start Record value domain activated The selected input IN 1 IN 6 will be looped through when starting up OFF gt ON the preamplifier 720 the next time Select OFF if no signal shall be presented at the record out connectors Page 720 23 soulutlion I 2u3 Seite nature of sound Ot
32. ternally the amplifiers work up until fre quencies of 40 MHz all details of the music reproduced naturally The spatial re production gets really three dimensional and holographic optimal recording prereg uisite The power of the output stage ensures that all these details are truly trans mitted to your amplifier Cable losses are minimised Power supply The preamplifier 720 has two separate power supply units one for the supply of the audio section another for the supply of the digital circuits The stringent separation of the power supply units is amended with a multi stage filter network Interference between digital and analogue circuits is thus minimised The supply voltages for the audio section are multi stabilised We use an amplifier like circuit working into a capacitor The ultra stable supply voltage has a load dependant deviation of 500 microvolt and a residual ripple lt 0 01 microvolt The supply voltages are distributed on the audio circuit through solid copper 3x6 5 For minimal micro phonic interferences the power supply units are flex mounted on rubber damping elements and therefore effectively decoupled from the housing The high quality supply voltages are made available for external components through the DC OUT connection Page 720 9 soulutlion 3 6 3 7 3 8 Seite 10 nature of sound Ot Gain adjustment Different signal sources typically have unequal output levels Fro
33. the scope of delivery preamplifier 720 remote control 720 incl batteries 2xAAA phono termination plug phono modul 1000 phono modul 1kQ mains cable HMS soulution mains cable user manual cotton gloves Please store the packing of the soulution 720 for future transports Check your pre amplifier 720 for transport damages In the case your preamplifier is damaged please contact your soulution dealer Security advice If your preamplifier is still very cold from the transport please let it warm within the packing in order to omit condensation of water inside your preamplifier Optimal positioning of your preamplifier There are no limitations on where to position your preamplifier We suggest position ing the preamplifier so that the connecting cables to the amplifier and the signal sources remain short Security advice The preamplifier 720 has a high quality surface Please be careful while transporting your preamplifier so that the surface does not get scratched Please use the enclosed cotton gloves Never position your preampli fier on the front panel The display glass could get scratched or even burst 720 Page 11 soulutlion 4 3 4 3 1 4 3 2 Seite nature of sound _ ET n 12 Rear panel of the preamplifier 720 soulution 720 s rear panel Mains A Connect the preamplifier 720 with the mains supply The enclosed power cord is optimised for the soulution 720 After switch on the p
34. tion Gain IN 1 Value domain activated Gain adjustments are immediately performed so you can check whether the Gain setting is appropriate 28 5 2 11 5 2 12 Preamplifier User manual i er Security advice Define which signal source has the highest output level Set the gain for this input to 0 dB Now adjust the other inputs accordingly Please use a moderate volume level to do so If you exchange signal sources you should check whether the gain setting are still appropriate If you run a high level signal source with a high gain the output signal could get distorted Phono Gain This function allows you to adjust the basic amplification of Phono amplifier to the requirements of your cartridge Additionally you have the possibility to use the func tion Gain In 3 to further adjust the level of the phono amplifier high 54dB 1 kHz Ur EE Values Cie GEI low 60 dB 1 kHz LO FROG Default low Display for function Phono Gain Value domain activated Phono Gain settings are immediately performed so you can check whether the set ting IS appropriate Phono High Pass This function de activates the subsonic filter RIAA IEC 3 dB 20 Hz of the phono amplifier Page 720 29 soulutlion 0 2013 5 2 14 Seite nature of sound ol Values ON OFF PHONO HIGH FHSS O JFF Default ON FROS Display for function Phono High Pass Value domain activated The setti
35. ve micro fibre towel Please do not use any solvents or liquidities Service Do not try to repair your preamplifier by yourself The preamplifier needs a service check by a qualified person in the following cases the mains cable or the mains connectors are damaged foreign substances or liquidity has entered the preamplifier the preamplifier has seen rain the preamplifier seems to malfunction the preamplifier has fallen to the floor or the housing is damaged Serial Nr 720 Please note the serial number of your preamplifier 720 above Page soulutlion Sal 3 2 3 3 Seite natuce of sound Ot 8 Technical Highlights Layout The preamplifier is realised as asymmetrical dual mono circuit Left and right audio channels incl phono mc stage each have identical circuit boards Resulting in a channel separation of gt 105 dB prerequisite for a three dimensional spatial repro duction The audio section is physically separated from the power supply units and the digi tal circuits For minimal interference the different sections are shielded against each other Volume control Relays switched high precision metal foil resistors form an 80 steps 1 dB volume control Each channel has its own volume control resistor network The volume control allows also adjusting the balance Depending on the balance setting the volume of the left or right channel is decreased In order to avoid unpleasant click
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